Barnaby was an aristocratic doctor who went to Sinner's End to provide charity work. He had short brown hair, blue eyes, and a stubble. At the time of his death, he donned a white shirt with a brown vest and a burgundy tie, with a stethoscope around his neck.
Barnaby was found at a street behind Paddy Whack's with multiple bruises on his body. After spotting ligature marks on Barnaby's wrists, Dick concluded that he was suspended like a boxing sack before being beaten to death with a spiky, metallic object. The location of Barnaby's wounds led Dick to believe that the killer knew where to punch in order to inflict serious damage, which also meant that the killer knew how to fight.
In the fighting club, the team found brass knuckles, which were filed as the murder weapon since they matched Dick's description. They had skin cells which (per Charlie's DNA machine) were from a green-eyed person, meaning the killer had green eyes.
Relationship with suspects
Barnaby's fiancée, cabaret dancer Marla de Paradis, cried for the loss of her beloved fiancé, but was glad that he would no longer be able to fritter away her inheritance on the poor. His father, Lord Frederick Wilson, was also annoyed by Barnaby's altruistic endeavors as they were making the Wilson family the laughingstock of society. Frederick teamed up with Nurse Jemima Hatchett to persuade Barnaby to stop his endeavors, to no avail.
Trained fighter Kev O'Connell was one of Barnaby's patients. Barnaby attempted to get him to stop fighting as Kev had suffered serious injuries to the head, but his advice was ignored. Meanwhile, Barnaby attempted to get pub owner Dermot McMurphy's illegal fight club shut down.
Killer and motives
The killer turned out to be Kev.
Kev denied involvement but soon admitted to the crime. While he also admitted to be part of Mad Dog's gang, he said that he punched Barnaby to death with brass knuckles because the doctor was engaged to his beloved Marla de Paradis. He then branded Barnaby with a shamrock-shaped iron for good luck. Judge Lawson sentenced him to 20 years of forced labor, without parole.
- Sinners and Saints (Case #19 of Mysteries of the Past)
- Death Is a Cabaret (Case #23 of Mysteries of the Past; mentioned)
- Slayer's End (Case #24 of Mysteries of the Past; mentioned)
- Death Without Parole (Case #25 of Mysteries of the Past; mentioned)
- Bridge over Troubled Water (Case #31 of Mysteries of the Past; mentioned)
- Burning Bridges (Case #35 of Mysteries of the Past; mentioned)
- Stockbroken (Case #38 of Mysteries of the Past; mentioned)